Explanation:

 Guru Angad invented the present form of the Gurmukhi script. It became the medium of writing the Punjabi language in which the hymns of the Gurus are expressed. This step had a far-reaching purpose and impact as it gave the common people a language that is simple to learn and write.
Ram Das is credited with founding the holy city of Amritsar in the Sikh tradition.Two versions of stories exist regarding the land where Ram Das settled. In one based on a Gazetteer record, the land was purchased with Sikh donations, for 700 rupees from the owners of the village of Tung.According to the Sikh historical records, the site was chosen by Guru Amar Das and called Guru Da Chakk, after he had asked Ram Das to find land to start a new town with a man made pool as its central point.
Guru Har Gobind became the sixth guru of the Sikhs. He carried two swords -one for Spiritual reasons and one for temporal (worldly) reasons.From this point onward, the Sikhs became a military force and always had a trained fighting force to defend their independence.
The Golden temple is built around a man-made pool (sarovar) that was completed by Guru Ram Das in 1577.Guru Arjan,the fifth Guru of Sikhism, requested Sai Mian Mir – a Muslim Pir of Lahore to lay its foundation stone in 1589.In 1604, Guru Arjan placed a copy of the Adi Granth in Harmandir Sahib, calling the site Ath Sath Tirath.